Low temperature battery module structure

Abstract

This invention discloses a low-temperature battery module structure, relating to the technical field of battery module structures. It solves the problem that heat easily accumulates inside the module casing during discharge, leading to poor heat dissipation and reduced safety. The low-temperature battery module structure includes a lower module base, an upper module cover, battery packs, a battery heat dissipation assembly, and a battery conductive transmission mechanism. The lower module base has several battery storage cavities arranged inside via partitions. Several battery packs are arranged inside the battery storage cavities, and the battery packs are electrically connected to the battery conductive transmission mechanism, extending to the outside of the lower module base. The upper module cover is screwed to the top of the lower module base, and the battery heat dissipation assembly is located at the bottom of the lower module base. In this invention, the high-temperature gas generated during battery charging and discharging comes into contact with the coolant and external gas, completing the cooling and heat dissipation process and improving the safety of the battery module structure during assembly and use.

Description

Technical Field

[0001] This invention relates to the field of battery module structure technology, specifically to low-temperature battery module structure. Background Technology

[0002] A battery module is a combination of several battery packs connected in series, parallel, or series-parallel configurations. It generally also includes components such as a casing and protective devices to form the entire battery module structure, and is widely used in new energy fields such as electric vehicles.

[0003] A Chinese patent application with publication number CN118073714A discloses a battery module, including a battery pack, a structural frame, a first sealing plate, and a second sealing plate. The battery pack is composed of multiple sets of cells arranged in parallel, each set of cells including a first cell and a second cell, with a first gap between the first cell and the second cell, and the first gap in each set of cells forming a first air duct. There is a second gap between adjacent sets of cells. The structural frame includes a first module side wall and a second module side wall, which are respectively disposed on both sides of the battery pack and are separated from the sides of the battery pack by a first gap. The battery module has three partitions, with the third partition forming a second air duct, which connects the first and second air ducts. A first sealing plate is located at the air inlet of the first air duct to seal it. A second sealing plate is located at the air outlet of the second air duct to seal it as well. This invention effectively cools the high-temperature areas inside the battery module by controlling the flow of cold air through the sealing plates, thereby alleviating the temperature of the high-temperature areas, reducing the maximum temperature difference, reducing the overall temperature rise of the battery module, improving the temperature uniformity of the cells in the battery module, and thus improving the cooling efficiency of the battery module.

[0004] However, this battery module structure has the following drawbacks in actual use:

[0005] 1. When assembling existing battery module structures, multiple battery packs need to be electrically connected to each other to power the new energy electric vehicle. However, when several batteries are installed inside the module casing, in order to increase the battery assembly density, the gaps between the batteries are small. This causes heat to easily accumulate inside the module casing when the battery is actually discharged, making it difficult to dissipate heat and resulting in low safety.

[0006] 2. In existing battery module structures, when assembling and fixing multiple battery packs, the battery packs are installed in a relatively compact position to maximize the capacity of the module casing. Several wires are used to connect the battery packs. This wire arrangement leads to a messy wiring layout during charging and discharging. Furthermore, the assembly process is complex, and the wiring reduces the utilization rate of the internal space of the module casing, affecting the energy density of the battery module. Summary of the Invention

[0007] The purpose of this invention is to provide a low-temperature battery module structure to solve the problems mentioned in the background art.

[0008] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0009] This invention provides a low-temperature battery module structure, including a lower module base, an upper module cover, battery packs, a battery heat dissipation assembly, and a battery conductive transmission mechanism. The lower module base has several battery storage cavities arranged inside via partitions. Several battery packs are disposed inside each battery storage cavity. The battery packs and the battery conductive transmission mechanism are electrically connected and extend to the outside of the lower module base.

[0010] The top of the lower mold base of the module is fitted with an upper mold cover by screws, and the bottom of the lower mold base of the module is provided with a battery heat dissipation assembly.

[0011] The battery conductive transmission mechanism includes:

[0012] A discharge assembly is installed on one side inside the lower mold base of the module and connected to an external device wire. The discharge assembly is electrically connected to the side of the battery pack.

[0013] An external reinforcement component is snapped onto the inner wall of the lower mold base of the module and installed on the outer side of the partition plate. The external reinforcement component reinforces the inner battery pack and discharge assembly.

[0014] A charging component is detachably mounted on one side of the lower module base of the module and disposed away from the discharge component. The charging component is electrically connected to several battery packs.

[0015] As a preferred embodiment of the present invention, a low-temperature transmission component is provided at the internal center of the lower mold base of the module, the low-temperature transmission component comprising:

[0016] An intermediate copper plate is installed at the center inside the lower mold base of the module and located on the side of the battery pack. A heat-conducting plate is provided inside the intermediate copper plate.

[0017] A bent pipe is disposed inside the heat-conducting plate and extends to the outside of the lower mold base of the module. Coolant is circulated inside the bent pipe.

[0018] In a preferred embodiment of the present invention, the battery pack comprises a battery casing, a battery module, and conductive connectors. The battery casing is disposed inside the battery storage cavity and located on the side of the separator and the intermediate copper plate. The battery module is disposed inside the battery casing, and the conductive connectors are electrically connected to the side of the battery module.

[0019] The conductive connector is installed on the side of the battery casing and is electrically connected to the discharge component and the charging component.

[0020] As a preferred embodiment of the present invention, the battery heat dissipation assembly includes:

[0021] A bottom frame is installed at the bottom of the lower mold base of the module and is hollow inside. Several gas transmission sections are provided on the inner bottom of the bottom frame, and ventilation meshes are detachably installed on the left and right sides of each gas transmission section.

[0022] The ventilation mesh is installed on the left and right sides of the bottom frame;

[0023] A heat dissipation vent is provided at the bottom of the lower mold base of the module and above the bottom frame. A dust filter is installed inside the heat dissipation vent and extends into the interior of the bottom frame.

[0024] The upper bracket is installed at the bottom of the lower mold base of the module. The upper bracket has several heat dissipation vents inside, and the top of the upper bracket supports the battery casing.

[0025] In a preferred embodiment of the present invention, the side of the gas transmission section near the ventilation grid is configured as an inclined surface, and the gas is guided and transmitted.

[0026] The top of the upper bracket also supports a partition and the intermediate copper plate.

[0027] As a preferred embodiment of the present invention, the discharge assembly includes:

[0028] A discharge plug is detachably installed on one side of the lower mold base of the module, and a discharge head is installed inside it. The discharge head is connected to an external device wire, and several discharge heads are provided.

[0029] A relay module is installed inside the lower module base of the module and is electrically connected to the discharge head. The left and right sides of the relay module are electrically connected to plug-in parts, and the plug-in parts are electrically connected to the conductive connector.

[0030] A top conductive wire is electrically connected to the top of the relay module and is electrically connected to a snap-fit ​​cover, which snaps onto the top of the partition.

[0031] An external conductor is electrically connected to the outside of the snap-fit ​​cover and to the side of the conductive connector.

[0032] In a preferred embodiment of the present invention, the battery packs located near the left and right sides of the relay module and the battery packs located on the side of the partition are arranged perpendicularly to each other.

[0033] Both the top conductive wire and the snap-fit ​​cover are provided in two sets, and external reinforcement components are provided on the left and right sides of the snap-fit ​​cover.

[0034] In a preferred embodiment of the present invention, the plug-in part and the external conductor are provided with a plurality of card interfaces inside, and the card interfaces are connected to the card connectors outside the conductive connector.

[0035] The top conductive wire is located at the inner bottom of the upper cover of the module. The side of the top conductive wire is provided with a wire that connects to the voltage protection module at the top of the snap-fit ​​cover. The voltage protection module protects the battery pack from discharge.

[0036] As a preferred embodiment of the present invention, the external reinforcement component includes:

[0037] A pressure groove is formed on the left and right sides of the inner wall of the lower mold base of the module, and several pressure grooves are provided. A pressure frame is slidably connected inside the pressure groove.

[0038] The pressure frame is slidably connected to the outside of the intermediate copper plate and the partition. The pressure frame is H-shaped and presses down on the intermediate copper plate. The battery pack is arranged on the inside of the pressure frame.

[0039] As a preferred embodiment of the present invention, the charging component includes:

[0040] The connecting part is formed inside one side of the lower mold base of the module, and the upper and lower sides are recessed inward to form a recessed part. A charging plug is movably connected inside the connecting part.

[0041] A charging unit, which is installed inside the charging plug and electrically connected to a charging head at its bottom, the charging head being electrically connected to the conductive connector; and

[0042] A charging protection module is disposed inside the charging unit and electrically connected to the charging head, which is connected to an external power source via a wire.

[0043] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0044] 1. In the low-temperature battery module structure, during the charging and discharging of the battery pack inside the lower module base, the high temperature generated during battery pack operation is moved through the upper support at the bottom to the space at the bottom of the lower module base. There, it mixes with external gas introduced through the bottom frame and heat dissipation vents, achieving ventilation and heat dissipation. The introduction of external gas serves two purposes: firstly, impurities are separated through ventilation mesh and dust filter; secondly, the angled design of the gas transmission section allows it to cut obliquely into the interior of the lower module base, enhancing the mixing and heat dissipation effect of the high-temperature gas. Furthermore, the high-temperature gas is cooled by circulating coolant (within the curved pipes), working in conjunction with the ventilation and heat dissipation of the external gas to achieve better battery pack heat dissipation. This minimizes the accumulation of high-temperature gas inside the module, preventing it from threatening battery pack operation and improving the safety of the battery module structure during assembly and use.

[0045] 2. In the low-temperature battery module structure, during battery assembly, the assembly position of the battery pack can be fixed by pressing down through a pressure bracket design. This improves the stability and firmness of the battery pack after it is installed inside the lower mold base of the module, reducing the probability of internal battery pack displacement and shaking due to vibration. Furthermore, the pressure bracket for pressing and fixing the battery pack serves two purposes: firstly, it can press and fix the snap-fit ​​cover and separator, ensuring the firmness of the internal and external conductors when electrically connecting to the conductive connectors; secondly, it can press and fix the intermediate copper plate, heat-conducting plate, and bent pipes for cooling and heat dissipation, ensuring that the intermediate copper plate and the battery pack on its side can fit tightly together. This close contact enhances the cooling effect of the coolant on the internal battery modules of the battery pack.

[0046] 3. In the low-temperature battery module structure, there are two ways to install several battery packs inside the lower module base. In one method, the conductive connector of the battery pack assembled on the side of the separator is located close to the separator, and the top conductive wire for power transmission is located in the center of the lower module base and electrically connected to the relay module through a snap-fit ​​cover and an external conductor. In the other method, the conductive connector of the battery pack assembled outside the relay module is electrically connected to the plug-in part and is also located in the center of the lower module base. Through the above design of the battery pack assembly position, while ensuring the battery pack assembly density, the top conductive wire for electrical connection is laid more neatly, which can effectively improve the assembly efficiency during mechanized automatic assembly.

[0047] 4. In the low-temperature battery module structure, when charging the battery pack, the battery pack closest to the charging head and electrically connected to it will first store electrical energy, completing the charging operation of one row of battery packs. At this time, the electrical energy of these battery packs will be transferred to the interior of other battery packs through the top conductive wire, the snap-fit ​​cover, and the external conductor for discharging, realizing the charging operation of the battery packs inside the lower module base. Through the above structural design, the number of wires laid when charging multiple battery packs can be reduced, and more space can be used for assembling battery packs and protection systems (voltage protection modules, etc.). Attached Figure Description

[0048] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0049] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0050] Figure 1 This is a schematic diagram of the overall exploded structure of the present invention;

[0051] Figure 2 This is a schematic diagram of the overall structure of the invention from a bottom view;

[0052] Figure 3 This is a schematic diagram of the overall structure of the present invention;

[0053] Figure 4 This is a schematic diagram of the overall structure on the right side of the invention;

[0054] Figure 5 This is a schematic diagram of the overall structure on the left side of the invention;

[0055] Figure 6 This is a schematic diagram of the structure of the lower module base and several battery packs assembled according to the present invention;

[0056] Figure 7 This is a schematic diagram showing the cross-sectional view of the lower module base and several battery packs assembled in this invention.

[0057] Figure 8 This is a schematic diagram of the structure of the lower mold base of the module of the present invention;

[0058] Figure 9 This is a schematic diagram of the exploded connection between the lower mold base and the external reinforcement components of the present invention.

[0059] Figure 10 This is a schematic diagram of the battery pack structure of the present invention;

[0060] Figure 11 This is a schematic diagram of the structure of the battery pack and discharge assembly connected in an explosion according to the present invention;

[0061] Figure 12 This is a schematic diagram of the structure of the battery heat dissipation component of the present invention exploding;

[0062] Figure 13 This is a schematic diagram of the connection between the battery pack and the discharge assembly of the present invention;

[0063] Figure 14 This is a schematic diagram of the discharge assembly of the present invention viewed from below;

[0064] Figure 15 This is a schematic diagram of the connection between the top conductive wire and the voltage protection module of the present invention;

[0065] Figure 16 This is a schematic diagram of the structure of the discharge component of the present invention exploding;

[0066] Figure 17 This is a schematic diagram of the exploded connection between the lower module base and the charging component of the present invention;

[0067] Figure 18 This is a cross-sectional structural schematic diagram of the cryogenic transmission component of the present invention;

[0068] In the picture:

[0069] 10. Lower module base; 101. Separator; 102. Battery storage cavity;

[0070] 20. Module upper mold cover;

[0071] 30. Battery pack; 301. Battery casing; 302. Battery module; 303. Conductive connector; 3031. Snap-on connector;

[0072] 40. Battery heat dissipation assembly; 401. Bottom frame; 402. Gas transmission section; 403. Ventilation mesh; 404. Heat dissipation exhaust port; 405. Dust filter; 406. Upper bracket; 407. Heat dissipation port;

[0073] 50. Battery conductive transmission mechanism;

[0074] 60. Discharge assembly; 601. Discharge plug; 602. Discharge head; 603. Relay module; 604. Plug-in part; 6041. Card interface; 605. Top conductive wire; 6051. Snap-fit ​​cover; 606. External conductor; 607. Voltage protection module;

[0075] 70. External reinforcement component; 701. Pressure groove; 702. Pressure bracket; 80. Charging component; 801. Connecting part; 802. Recessed part; 803. Charging plug; 804. Charging part; 805. Charging head; 806. Charging protection module;

[0076] 90. Low-temperature transmission component; 901. Intermediate copper plate; 902. Heat-conducting plate; 903. Bending pipe. Detailed Implementation

[0077] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0078] Please see Figures 1-18 The low-temperature battery module structure includes a lower module base 10, an upper module cover 20, battery packs 30, a battery heat dissipation assembly 40, and a battery conductive transmission mechanism 50. The lower module base 10 has several battery storage cavities 102 arranged inside via partitions 101. Several battery packs 30 are arranged inside the battery storage cavities 102. The battery packs 30 are electrically connected to the battery conductive transmission mechanism 50 and extend to the outside of the lower module base 10. The upper module cover 20 is screwed onto the top of the lower module base 10, and the battery heat dissipation assembly 40 is located at the bottom of the lower module base 10. The battery conductive transmission mechanism... The structure 50 includes a discharge assembly 60, which is installed inside the lower mold base 10 of the module and connected to an external device wire. The discharge assembly 60 is electrically connected to the side of the battery pack 30. An external reinforcement assembly 70 is snapped into the inner wall of the lower mold base 10 of the module and installed on the outside of the partition 101. The external reinforcement assembly 70 reinforces the inner battery pack 30 and the discharge assembly 60. A charging assembly 80 is detachably installed on one side of the lower mold base 10 of the module and disposed away from the discharge assembly 60. The charging assembly 80 is electrically connected to several battery packs 30.

[0079] The working principle described above is as follows: When assembling the battery packs 30 into the lower module base 10, several battery packs 30 are moved into the battery storage cavity 102 by mechanical grippers, and the assembly and fixation of the assembled battery packs 30 are completed by external reinforcement components 70. Simultaneously, the design of the battery heat dissipation component 40 at the bottom of the lower module base 10 facilitates the transfer of external gas to the interior of the lower module base 10. High-temperature gas inside the lower module base 10 is transferred to the outside of the lower module base 10 through the battery heat dissipation component 40, improving the ventilation and heat dissipation effect of the battery packs 30 during charging and discharging, and preventing the accumulation of high-temperature gas inside the lower module base 10. Furthermore, the design of the discharge component 60 and the charging component 80, while meeting the charging and discharging process of the battery packs 30, also ensures neater laying of the wires electrically connected to the battery packs 30, guaranteeing that the wires do not occupy the internal space of the lower module base 10 during laying, thus improving the utilization rate of the internal space of the lower module base 10. The battery pack 30 is assembled in the lower module base 10 with a set position and angle, which can further improve the neatness of the discharge component 60 and the charging component 80 when they are electrically connected to the battery pack 30, and improve the utilization rate of the internal space of the lower module base 10.

[0080] For details, please refer to the following: Figure 18 A low-temperature transmission component 90 is provided at the center of the lower mold base 10 of the module. The low-temperature transmission component 90 includes an intermediate copper plate 901, which is installed at the center of the lower mold base 10 of the module and located on the side of the battery pack 30. A heat-conducting plate 902 is provided inside the intermediate copper plate 901. A bent pipe 903 is provided inside the heat-conducting plate 902 and extends to the outside of the lower mold base 10 of the module. Coolant is circulated inside the bent pipe 903.

[0081] In the low-temperature battery module structure of this invention, the design of the intermediate copper plate 901 divides the space inside the battery storage cavity 102 where the battery pack 30 is placed, and the battery pack 30 disposed on the side of the intermediate copper plate 901 is heat-conducting. Simultaneously, the heat introduced into the intermediate copper plate 901 can be transferred to the interior of the bent pipe 903 through the heat-conducting plate 902, and comes into contact with the coolant circulating inside the bent pipe 903, thus achieving heat dissipation. The design of the bent pipe 903 increases the contact area between the heat and the coolant, further improving the cooling effect.

[0082] For details, please refer to the following: Figure 10The battery pack 30 consists of a battery casing 301, a battery module 302, and a conductive connector 303. The battery casing 301 is disposed inside the battery storage cavity 102 and is located on the side of the separator 101 and the intermediate copper plate 901. The battery module 302 is disposed inside the battery casing 301. The conductive connector 303 is electrically connected to the side of the battery module 302. The conductive connector 303 is installed on the side of the battery casing 301 and is electrically connected to the discharge component 60 and the charging component 80.

[0083] In the low-temperature battery module structure of the present invention, the design of the battery casing 301 allows for the installation and positioning of the internal battery module 302, and electrically connects the charging and discharging port of the battery module 302 to the conductive connector 303, thereby enabling the charging operation of the battery module 302 through the conductive connector 303.

[0084] For details, please refer to the following: Figure 12 The battery heat dissipation assembly 40 includes a bottom frame 401, which is installed at the bottom of the lower mold base 10 of the module and is hollow inside. Several gas transmission parts 402 are provided at the bottom inner part of the bottom frame 401. Ventilation meshes 403 are detachably installed on the left and right sides of the gas transmission parts 402. The ventilation meshes 403 are installed on the left and right sides of the bottom frame 401. A heat dissipation exhaust port 404 is opened at the bottom of the lower mold base 10 of the module and is located above the bottom frame 401. A dustproof mesh 405 is installed inside the heat dissipation exhaust port 404 and extends into the interior of the bottom frame 401. An upper bracket 406 is installed at the bottom inner part of the lower mold base 10 of the module. Several heat dissipation vents 407 are opened inside the upper bracket 406. The top of the upper bracket 406 supports the battery casing 301.

[0085] In this embodiment, the gas transmission section 402 is set as an inclined surface on the side near the ventilation grid 403, and guides the gas flow. The top of the upper bracket 406 is also supported by a partition 101 and a middle copper plate 901. Through the design of the gas transmission section 402, it is ensured that when the gas is transmitted to the bottom frame 401, it can cut into the interior of the heat dissipation exhaust port 404 at an angle, thereby improving the effect of gas ventilation and heat dissipation.

[0086] In the low-temperature battery module structure of the present invention, when ventilating and dissipating heat for the operation of the battery pack 30, gas can be transmitted to the interior of the bottom frame 401 through the ventilation mesh 403, and then obliquely cut into the interior of the heat dissipation exhaust port 404 through the gas transmission part 402 inside the bottom frame 401. The gas then passes through the dust-proof mesh 405 provided inside the heat dissipation exhaust port 404 and is transmitted to the interior of the lower module base 10, providing ventilation and heat dissipation for the battery pack 30 mounted on the top of the upper bracket 406. The upper bracket 406 is positioned with a space between it and the bottom of the bottom frame 401, facilitating the contact and mixing of external gas and internal high-temperature gas (via the battery pack 30), thus facilitating the heat dissipation and ventilation effect.

[0087] For details, please refer to the following: Figure 13 , Figure 14 , Figure 15 and Figure 16 The discharge assembly 60 includes a discharge plug 601, which is detachably installed on one side of the lower mold base 10 of the module and has a discharge head 602 installed inside. The discharge head 602 is connected to an external device wire and has several discharge heads 602. A relay module 603 is installed inside the lower mold base 10 of the module and is electrically connected to the discharge head 602. The left and right sides of the relay module 603 are electrically connected to plug parts 604, which are electrically connected to conductive connectors 303. A top conductive wire 605 is electrically connected to the top of the relay module 603 and is electrically connected to a snap-fit ​​cover 6051, which snaps onto the top of the partition 101. An external conductor 606 is electrically connected to the outside of the snap-fit ​​cover 6051 and to the side of the conductive connector 303.

[0088] In this embodiment, the battery packs 30 located near the left and right sides of the relay module 603 and the battery packs 30 located on the sides of the partition 101 are arranged perpendicularly to each other. Two sets of top conductive wires 605 and snap-fit ​​covers 6051 are provided, and external reinforcing components 70 are provided on the left and right sides of the snap-fit ​​covers 6051. The design of the external reinforcing components 70 can compress the position of the snap-fit ​​covers 6051, improving the stability and firmness of the connection between the snap-fit ​​covers 6051 and the conductive connectors 303. Simultaneously, the design of the battery pack 30's position facilitates electrical connection with the external conductors 606 and increases the energy density of the lower module base 10, allowing for the installation of a larger number of battery packs 30.

[0089] Meanwhile, in this embodiment, the plug-in part 604 and the external conductor 606 are internally provided with several card interfaces 6041. The card interfaces 6041 are connected to the card connectors 3031 on the outside of the conductive connectors 303. A top conductive wire 605 is disposed at the inner bottom of the upper mold cover 20 of the module. A wire is provided on the side of the top conductive wire 605 to connect to a voltage protection module 607 on the top of the card cover 6051. The voltage protection module 607 protects the battery pack 30 from discharge. The design of the card interfaces 6041 makes the card connectors 3031 more secure when connected to the plug-in part 604 and the external conductor 606, preventing misalignment due to vibration. The voltage protection module 607 protects the battery pack 30 during discharge.

[0090] In the low-temperature battery module structure of the present invention, when the battery module is discharging, the electrical energy inside the battery module 302 is transmitted to the interior of the external conductor 606 through the conductive connector 303, and then to the conductive pin portion inside the snap-fit ​​cover 6051 through the external conductor 606. Subsequently, the electrical energy is transmitted to the interior of the top conductive wire 605 through the conductive pin portion inside the snap-fit ​​cover 6051, and then to the interior of the relay module 603 through the top conductive wire 605. At this time, the electrical energy inside the relay module 603 is regulated and transmitted to the interior of the discharge head 602, realizing the discharge operation. The top conductive wire 605 is located at the center inside the lower module base 10 of the module, minimizing the space occupied by the top conductive wire 605.

[0091] For details, please refer to the following: Figure 9 The external reinforcement component 70 includes a pressing groove 701, which is opened on the left and right sides of the inner wall of the lower mold base 10 of the module, and several pressing grooves 701 are provided. A pressing frame 702 is slidably connected inside the pressing groove 701, and the pressing frame 702 is slidably connected to the outside of the middle copper plate 901 and the partition 101. The pressing frame 702 is arranged in an "H" shape and presses down on the middle copper plate 901. A battery pack 30 is provided on the inner side of the pressing frame 702.

[0092] In the low-temperature battery module structure of the present invention, the lower pressure frame 702 can be snapped into the inside of the lower pressure groove 701, and the lower pressure frame 702 is installed and fixed through the lower pressure groove 701. At this time, the lower pressure frame 702 can, on the one hand, squeeze the battery pack 30 arranged inside, improve the stability when assembling the battery pack 30, and on the other hand, press down the intermediate copper plate 901 arranged at its bottom, so as to stably install the intermediate copper plate 901 inside the lower mold base 10 of the module, thereby improving the stability of the intermediate copper plate 901 when it is cooled and dissipated by the internal coolant.

[0093] For details, please refer to the following: Figure 8 and Figure 17 The charging assembly 80 includes a connecting part 801, which is located inside one side of the lower mold base 10 of the module, and has recesses 802 formed by inward inward on both the upper and lower sides. A charging plug 803 is movably connected inside the connecting part 801. A charging part 804 is installed inside the charging plug 803 and is electrically connected to a charging head 805 at its bottom. The charging head 805 is electrically connected to a conductive connector 303. A charging protection module 806 is located inside the charging part 804 and is electrically connected to the charging head 805. The charging head 805 is connected to an external power source through a wire.

[0094] In the low-temperature battery module structure of the present invention, when charging the battery pack 30, the power source can be connected to the charging head 805 via a wire, transmitting external power to the interior of the charging section 804 through the charging head 805. Then, the power inside the charging section 804 is electrically connected to the battery module 302 via the conductive connector 303, thus charging the battery module 302. While charging the battery module 302, other electrically connected battery modules 302 are also charged via the external conductor 606, the snap-fit ​​cover 6051, and the top conductive wire 605, ultimately achieving the charging of multiple battery modules 302.

[0095] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A low-temperature battery module structure, comprising a lower module base (10), an upper module cover (20), a battery pack (30), a battery heat dissipation assembly (40), and a battery conductive transmission mechanism (50), characterized in that: The lower module base (10) of the module has a plurality of battery storage cavities (102) arranged inside by a partition (101). The battery storage cavities (102) are provided with a plurality of battery packs (30). The plurality of battery packs (30) are electrically connected to the battery conductive transmission mechanism (50) and extend to the outside of the lower module base (10). The top of the lower module base (10) is fitted with an upper module cover (20) by screws, and the bottom of the lower module base (10) is provided with a battery heat dissipation assembly (40). The battery conductive transmission mechanism (50) includes: The discharge assembly (60) is installed on one side inside the lower module base (10) of the module and connected to the external device wires. The discharge assembly (60) is electrically connected to the side of the battery pack (30). An external reinforcement component (70) is snapped into the inner wall of the lower module base (10) of the module and installed on the outer side of the partition (101). The external reinforcement component (70) reinforces the inner battery pack (30) and the discharge component (60). A charging component (80) is detachably mounted on one side of the lower module base (10) and disposed away from the discharge component (60). The charging component (80) is electrically connected to several battery packs (30). Wherein: the discharge assembly (60) includes: A discharge plug (601) is detachably installed on one side of the lower mold base (10) of the module, and a discharge head (602) is installed inside it. The discharge head (602) is connected to the external equipment wire, and the discharge head (602) is provided with several. A relay module (603) is installed inside the lower module base (10) of the module and is electrically connected to the discharge head (602). The left and right sides of the relay module (603) are electrically connected to the plug-in part (604), and the plug-in part (604) is electrically connected to the conductive connector (303) of the battery pack. A top conductive wire (605) is electrically connected to the top of the relay module (603) and electrically connected to a snap-fit ​​cover (6051), which snaps onto the top of the partition (101). An external conductor (606) is electrically connected to the outside of the snap-fit ​​cover (6051) and to the side of the conductive connector (303).

2. The low-temperature battery module structure according to claim 1, characterized in that: A low-temperature transmission component (90) is provided at the center of the lower mold base (10) of the module. The low-temperature transmission component (90) includes: An intermediate copper plate (901) is installed at the center inside the lower mold base (10) of the module and located on the side of the battery pack (30). A heat-conducting plate (902) is provided inside the intermediate copper plate (901). A bent pipe (903) is disposed inside the heat-conducting plate (902) and extends to the outside of the lower mold base (10) of the module. Coolant is circulated inside the bent pipe (903).

3. The low-temperature battery module structure according to claim 2, characterized in that: The battery pack (30) consists of a battery casing (301), a battery module (302), and a conductive connector (303). The battery casing (301) is disposed inside the battery storage cavity (102) and is located on the side of the partition (101) and the intermediate copper plate (901). The battery module (302) is disposed inside the battery casing (301), and the conductive connector (303) is electrically connected to the side of the battery module (302). The conductive connector (303) is installed on the side of the battery casing (301) and is electrically connected to the discharge assembly (60) and the charging assembly (80).

4. The low-temperature battery module structure according to claim 3, characterized in that: The battery heat dissipation assembly (40) includes: The bottom frame (401) is installed at the bottom of the lower mold base (10) of the module and is hollow inside. The bottom of the bottom frame (401) is provided with a plurality of gas transmission parts (402). Ventilation mesh (403) is detachably installed on the left and right sides of the gas transmission parts (402). The ventilation mesh (403) is installed on the left and right sides of the bottom frame (401); A heat dissipation vent (404) is provided at the bottom of the lower mold base (10) of the module and above the bottom frame (401). A dust filter (405) is installed inside the heat dissipation vent (404) and extends into the interior of the bottom frame (401). The upper bracket (406) is installed at the bottom of the lower mold base (10) of the module. The upper bracket (406) has several heat dissipation vents (407) inside. The top of the upper bracket (406) supports the battery casing (301).

5. The low-temperature battery module structure according to claim 4, characterized in that: The gas transmission section (402) is sloped on the side near the ventilation grid (403) to guide and transmit the gas. The top of the upper bracket (406) also supports a partition (101) and the intermediate copper plate (901).

6. The low-temperature battery module structure according to claim 1, characterized in that: The battery packs (30) located near the left and right sides of the relay module (603) and the battery packs (30) located on the side of the partition (101) are arranged perpendicularly to each other. The top conductive wire (605) and the snap-fit ​​cover (6051) are each provided with two sets, and the snap-fit ​​cover (6051) is provided with external reinforcement components (70) on the left and right sides.

7. The low-temperature battery module structure according to claim 1, characterized in that: The plug-in part (604) and the external conductor (606) are provided with a plurality of card interfaces (6041), which are connected to the card connectors (3031) on the outside of the conductive connector (303), and The top conductive wire (605) is located at the bottom of the upper cover (20) of the module. The side of the top conductive wire (605) is provided with a wire connected to the voltage protection module (607) at the top of the snap-fit ​​cover (6051). The voltage protection module (607) protects the battery pack (30) from discharge.

8. The low-temperature battery module structure according to claim 2, characterized in that: The external reinforcement component (70) includes: A pressure groove (701) is formed on the left and right sides of the inner wall of the lower mold base (10) of the module, and several pressure grooves (701) are provided. A pressure frame (702) is slidably connected inside the pressure groove (701). The pressure frame (702) is slidably connected to the outside of the intermediate copper plate (901) and the partition (101). The pressure frame (702) is arranged in an "H" shape and presses down on the intermediate copper plate (901). A battery pack (30) is arranged on the inside of the pressure frame (702).

9. The low-temperature battery module structure according to claim 3, characterized in that: The charging component (80) includes: The connecting part (801) is opened inside one side of the lower mold base (10) of the module, and the upper and lower sides are recessed inward to form a recessed part (802). A charging plug (803) is movably connected inside the connecting part (801). A charging unit (804) is installed inside the charging plug (803) and has a charging head (805) electrically connected to its bottom. The charging head (805) is electrically connected to the conductive connector (303). A charging protection module (806) is disposed inside the charging unit (804) and electrically connected to the charging head (805), which is connected to an external power source via a wire.

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